A.O. Smith DRE 52 Installation And User Instructioins
Hot water storage devices
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Also See for DRE 52:
- Service handbook (76 pages) ,
- Instruction manual (44 pages) ,
- Installation and user instructions manual (26 pages)
Related Manuals for A.O. Smith DRE 52
Summary of Contents for A.O. Smith DRE 52
- Page 1 MODELS DRE 52 DRE 80 DRE 120 INSTALLATION AND USER INSTRUCTIOINS england HOT WATER STORAGE DEVICES...
- Page 2 A.O. Smith Water Products Company P.O. Box 70 5500 AB Veldhoven The Netherlands Telephone: (free) 0800 - AOSMITH 0800 - 267 64 84 General: +31 40 294 25 00 Fax: +31 40 294 25 39 E-Mail: info@aosmith.nl...
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Page 3: Table Of Contents
TABLE OF CONTENTS GENERAL ................... 4 Device Description .................... 4 Regulation and Safety ..................5 1.2.1 Boil Dry Protection .................... 7 1.2.2 Checking the Float Switch ................8 Technical description ..................9 Technical Data ....................10 FOR THE INSTALLER ..............12 Installation procedures .................. -
Page 4: General
1. GENERAL on the inside. The tank is also provided with two sacrifi cial anodes to give extra Device Description protection against corrosion. A thick CFC free polyurethane insulation layer, covered with a steel casing, prevents unnecessary The structure and equipment for this heat loss. -
Page 5: Regulation And Safety
Regulation and Safety For clarifi cation see the diagram below: (the image is an extract from the electrical diagram further on) Fig. 1 - regulation and safety... - Page 6 3 relays (3) and a control current During normal operation the regulating transformer (5) are fed from the main thermostat (9) switches the element (10) connection block (1). The main circuit on and off. If a temperature of above is protected by 30 Amp T fuses. 93°C occurs on an element the maximum The transformer (400V to 24V) is thermostat (8) locks the element.
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Page 7: Boil Dry Protection
1.2.1 Boil Dry Protection Fig. 2 - fl oat switch The boil dry protection mechanism is completely above it. In this case the consists of a fl oat switch which monitors device will not come into operation. the water level approximately halfway If the exposure height is set lower than up the tank above the elements. -
Page 8: Checking The Float Switch
1.2.2 Checking the Float Switch Switch off the feed voltage and remove the fuses from the elements. In this way the control circuit can be tested without the elements being put into operation. Drain the device until the water is defi nitely below the fl oat switch. If desired the fl... -
Page 9: Technical Description
Technical description Fig. 3 - Measurements Measurement Description Height hot water connection 1460 1580 1600 Height of upper side of device 1420 1540 1570 Diameter of boiler Depth Height of drain valve Height cold water supply Height T&P connection 1230 1335 1380 Cold water connection... -
Page 10: Technical Data
Technical Data Type DRE 52-9 DRE 52-18 DRE 52-36 Tank capacity litres Number of elements - Power 380V-3F kW 15.2 30.3 Power 400V-3F kW 16.8 33.6 Power 414V-3F kW 18.0 36.0 Heating time up to 60 * (400/414V) min 83/78... - Page 11 Type DRE 120-9 DRE 120-18 DRE 120-36 DRE 120-54 Tank capacity litres Number of elements - Power 380V-3F kW 15.2 30.3 45.5 Power 400V-3F kW 16.8 33.6 50.4 Power 414V-3F kW 18.0 36.0 54.0 Heating time up to 60 * (400/414V) min 187/174 93/87...
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Page 12: For The Installer
overfl ow of the inlet combination. This is 2. FOR THE INSTALLER a normal occurrence. The dripping must never be obstructed and/or blocked. The Installation procedures drain must remain free at all times with regard to the surroundings. The device may only be placed in a space if this meets the valid national and local The device must be provided with a regulations. -
Page 13: Electrical Diagrams
3 elements connection with 6 elements with nine elements Area of application: Area of application: Area of application: DRE 52-9, DRE 52-18 DRE DRE 80-9, DRE 80-18 DRE DRE 120-9 DRE 120-18 52-36 DRE 80-54 80-36 DRE 120-54 DRE 120-36... - Page 14 Electrical diagram – 3 phases – 3 elements A = Network connection B = Fuses C = Relay D = Fuse E = Transformer F = Safety relay G = Float switch H = Maximum thermostat K = Regulation thermostat Electrical heating element X1 = Terminal block...
- Page 15 Electrical diagram – 3 phases – 6 elements A = Network connection B = Fuses C = Relay D = Fuse E = Transformer F = Safety relay G = Float switch H = Maximum thermostat K = Regulation thermostat Electrical heating element X1 = Terminal block...
- Page 16 Electrical diagram – 3 phases – 9 elements A = Network connection B = Fuses C = Relay D = Fuse E = Transformer F = Safety relay G = Float switch H = Maximum thermostat K = Regulation thermostat Electrical heating element X1 = Terminal block...
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Page 17: Putting Into Operation
Putting into operation Temperature in °F Temperature in °C 2.2.1 Filling the Device 1. Fit the drain valve and check whether it is closed. 2. Open cold water valve to the boiler and open all valves at hot water drainage points for bleeding. The device is fi... -
Page 18: Temperature Regulation
2.2.4 Temperature Regulation 2.3.1 Sacrifi cial anode The device is continuously under The life of the anodes is determined water pipe pressure (maximum 8 bar by the quality and the quantity of water (=800 kPa)). Cold water may be fed fl... -
Page 19: Water Temperature Not Good
In normal operation the safety relays 2.4.1 Water Temperature Not Good are in a taut condition. When the feed voltage is switched off these drop. This 1. Check the settings of the regulating is clearly audible. If the switching on thermostat. -
Page 20: Fault Table
2.4.3 Fault Table Fault Cause Solution Insuffi cient or Temperature set too low Set regulating thermostats no hot water higher. Maximum thermostats break the Press in reset button. circuit. Connector is not seated in stop Check the relevant parts. contact, mains switch is off or fuses are broken. -
Page 21: For The User
3. FOR THE USER 3.1.3 Use The device is under water pipe pressure Instructions for Use (maximum 8 bar (=800 kPa)). As much cold water is fed is as hot water consumed. The regulating thermostat Warnings switches the electrical feed automatically. The installation and commissioning shall This means that if the temperature be done by a recognised installer. -
Page 22: Putting Out Of Operation
3.1.4 Putting out of operation Method of working: 1. For short periods: take the connector out of the stop contact or where there is a fi xed connection switch off the mains switch. 2. In addition to the operations in point 1, for longer periods it is recommended to shut off the water feed pipe in connection with the... -
Page 23: Warranty
4. WARRANTY c) that only drinking water is used, which is allowed to circulate freely at General Warranty all times (a separately installed heat exchanger is requisite for the heating of saline or corrosive water); If, within one year from the original d) that the tank has been defurred to installation date, after investigation and remove harmful scale deposits by... -
Page 24: Exclusions
A.O. Smith's commitments pursuant tank) (for replacement). to the warranty provided are confi ned to the delivery free of charge of the DRE 52 boiler to be replaced or any parts DRE 80 thereof ex the Veldhoven warehouse. DRE 120... - Page 26 0310 145_R1...